Individual provider Active NPI

Sydney Lynne Appelbaum, LCSW

  • Clinical Social Worker
  • Boston, MA
National Provider Identifier
1265004006
Registry record updated Jul 12, 2021
On this page

Key facts

NPPES NPI Registry
Primary specialty
Clinical Social WorkerTaxonomy code 1041C0700X
Practice address
450 Brookline Ave # SW2
Boston, MA 02215-5450
Phone
(617) 582-8772
NPI assigned
Jul 12, 2021
Last updated
Jul 12, 2021By the provider in NPPES
Sex
Female
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Jul 12, 2021

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Clinical Social Worker 1041C0700X NU Primary

Addresses

Primary practice location

450 Brookline Ave # SW2
Boston, MA 02215-5450

Mailing address

450 Brookline Ave # SW2
Boston, MA 02215-5450
Phone (617) 582-8772

Electronic endpoints 1

TypeEndpointUseAffiliation
Direct Messaging Address sydney_appelbaum@dfci.harvard.edu Direct Dana Farber Cancer Institute

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in MA
Eligible to order & refer
  • Part B services: Yes
  • Medical equipment: Yes
  • Home health: No
  • Power mobility devices: No
  • Hospice: No
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20240601000186 MA Practitioner - Clinical Social Worker 8628510922 Reassigns benefits to 1 organization

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled

Practice roles

OrganizationSpecialtyStatusNew patients
Multi-Service Eating Disorders Association Inc CurrentSince Mar 3, 2026 Accepting new patients

Organizations & group practices 1

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

NPI Registry JSON

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1626048000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1626048000000",
    "number": "1265004006",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "450 BROOKLINE AVE # SW2",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "022155450",
            "telephone_number": "617-582-8772"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "450 BROOKLINE AVE # SW2",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "022155450",
            "telephone_number": "617-582-8772"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "APPELBAUM",
        "first_name": "SYDNEY",
        "middle_name": "LYNNE",
        "credential": "LCSW",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2021-07-12",
        "last_updated": "2021-07-12",
        "certification_date": "2021-07-12",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "1041C0700X",
            "taxonomy_group": "",
            "desc": "Social Worker, Clinical",
            "state": "NU",
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "sydney_appelbaum@dfci.harvard.edu",
            "affiliation": "Y",
            "endpointDescription": "work email",
            "affiliationName": "Dana Farber Cancer Institute",
            "use": "DIRECT",
            "useDescription": "Direct",
            "address_1": "450 Brookline Ave # Sw2",
            "city": "Boston",
            "state": "MA",
            "country_code": "US",
            "postal_code": "022155450",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in Boston, MA

Sources for this page

Verify at the official NPI Registry.